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kari74 [83]
3 years ago
7

Does the point (–7, –7) satisfy the equation y = x?

Mathematics
2 answers:
Nataly_w [17]3 years ago
8 0

duh yes obiouslyyyyyyy

Marta_Voda [28]3 years ago
3 0
Yes it does satisfy
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Situation:
Arturiano [62]

Answer:

t = 6162  years

Step-by-step explanation:

Apparently you are asked to use the constant k = 0.0001 instead of the most common 0.00012. We'll answer the problem using such number you typed, but make sure that there is no omission in your typing.

The equation to use is that for carbon decay:

N(t)=N_0\,e^{-0.0001\,\,t}

If the skull contains 54% of its original amount of C14, then that means that :

N(t)=0.54 \,\,N_0

we use this to solve for the time (t) in our equation:

0.54\,\,N_0=N_0\,e^{-0.0001\,\,t}\\\frac{0.54\,\,N_0}{N_0}=e^{-0.0001\,\,t}\\0.54=e^{-0.0001\,\,t}\\ln(0.54)=-0.0001\,\,t\\t=\frac{ln(0.54)}{-0.0001} \\t=6161.86\,\,years

which rounded to the nearest year as requested gives :

t = 6162  years

8 0
3 years ago
the circumference of a circular painting is 40.82 ft. what is the radius of the painting? use 3.14 do not round
diamong [38]
Your answer would be about 20.41
7 0
3 years ago
Can you answer problem 11?
In-s [12.5K]

Answer:

well you didn't show problem 11 but here is a pretty photo of Port orford Oregon

7 0
3 years ago
The price of an item has been reduced by 40%. The original price was $66. Find the price of the item now.
serious [3.7K]

Answer:

$39.60

Step-by-step explanation:

We are finding 66 - 40%

66 less 40% = 60% of 66

60% of 66 is the price of the item now.

Convert 60% to decimal form by dividing by 100.

60%/100 = 0.60

Multiply the decimal form by 66

66 X 0.6 = 39.60

Since we are dealing with money, keep 2 decimal places, even if the last digit is 0.

The price of the item now is $39.60.

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Parallelogram is a rectangle when<br>​
salantis [7]
All the interior angles are right angles
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